Marines and sailors participate in an outdoor gas exercise in full protective gear.

Marines prepare their gear before participating in a live-fire exercise aboard USS New Orleans.

CBRN defense specialists check a barrel for contamination.

Marines and Sailors file into the gas chamber.

Marines practice riot control techniques.

Marines and Sailors load onto a Landing Craft Air-Cushion hovercraft.

A Marine clears his gas mask.

A Marine holds his chest displaying relief as Marines and Sailors exit the gas chamber.

An F-35B Lightning II lifts off the flight deck of USS Wasp.

A close-up view of Marines holding riot control shields.

An AV-8B Harrier II prepares to land on the flight deck of USS Nassau.

A marine fills the gas chamber with more CS gas.

An F-5N aggressor aircraft of the U. S. Marine Corps.

A U. S. Marine pulls security while his team boards a UH-60 Black Hawk.

An F/A-18 Hornet lands aboard USS Harry S. Truman.

An L-39ZA Albatros used as a threat simulation aircraft with a FLIR turret.

A Marine's athletic gear.